Notes about clorophyll data, by Gabriel Navarro (ICMAN­CISC)
Chlorophyll data set consists of satellite measurements of global and regional ocean color data obtained by the Sea­viewing Wide Field­of­view Sensor (SeaWiFS), in orbit on the OrbView­2 (formerly SeaStar) platform. SeaWiFS acquires approximately 15 pole­to­pole orbital swaths of data per day, and approximately 90% of the ocean surface is scanned every two days. Visible and near infrared raw radiance counts are collected (Level 1A data) and are converted to geophysical parameters
(Level
2
data).
The Level 3 Standard Mapped Image (SMI) data products are image representations of the binned data products. SMI files are generated for five geophysical parameters, including chlorophyll a concentration. We obtain L3 SMI images from ftp://oceans.gsfc.nasa.gov and they have been processed by SeaDAS v4.8 and reprojected in Mercator projection using M_Map toolbox written to Matlab by Rich Pawlowicz. The SeaWinds on QuikSCAT Level 3 data set consists of gridded values of scalar wind speed, meridional and zonal components of wind velocity, wind speed squared and time given in fraction of a day.QuickSCAT has been measuring ocean winds from July 1999 through present. We obtain QuikSCAT data from the Jet Propulsion Laboratory (JPL), ftp://podaac.jpl.nasa.gov/pub/ocean_wind/quikscat/L3/ in HDF format and these imager are processed with Matlab software. These data are given on a regular 0.25°grid, with the data separated into ascending and descending passes. Images have been projected in Mercator Projection using M_Map toolbox written to Matlab by Rich Pawlowicz.